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Some think Boeing will just give up on it!
from
https://www.space.com/boeing-starliner-next-iss-mission-nasa-plan
Boeing's Starliner capsule just landed with no crew aboard. What's next
for this astronaut taxi?
News
By Elizabeth Howell published 2 days ago
It's too soon to tell when Starliner will fly again.
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black and white photo of a space capsule descending through the sky
under three parachutes
Boeing's Starliner capsule descends through Earth's atmosphere on Sept.
7, 2024, heading for the touchdown that ended its Crew Flight Test
mission. (Image credit: NASA)
Boeing's Starliner capsule just returned to Earth without astronauts,
marking the beginning of a new set of investigations by NASA.
Starliner left the International Space Station (ISS) on Friday evening
(Sept. 6), then aced a landing in New Mexico just after midnight on
Saturday (Sept. 7). The touchdown brought an end to Crew Flight Test
(CFT), Starliner's first-ever astronaut mission. But no astronauts came
down with the capsule on Saturday; Starliner experienced problems with
its reaction control system (RCS) thrusters shortly after CFT's June 5 liftoff, and NASA decided not to risk putting Williams and Wilmore
aboard the capsule again.
The duo have a solid homecoming plan: They'll ride back to Earth in
February 2025 aboard a SpaceX Crew Dragon capsule rCo the one that will
fly the company's Crew-9 mission, which is set to launch toward the ISS
on Sept. 24. But what's next for the Starliner program is a bigger question.
NASA tasked SpaceX and Boeing in 2014 with sending astronauts to and
from the ISS. SpaceX, borrowing knowledge from its Cargo Dragon
spacecraft, flew a Crew Dragon test mission to the station in 2019
without astronauts and passed all metrics, allowing the company to
launch its debut astronaut test flight the following year. That effort
was successful, and SpaceX quickly moved to operational, long-duration astronaut missions to the ISS for NASA. It's in the middle of its eighth
such flight and is gearing up for the ninth (Crew-9).
Related: NASA astronauts can't wear Boeing Starliner spacesuits in
SpaceX's Dragon. Here's why
Starliner, a new design, has required quite a few adjustments. Its first mission, an uncrewed test flight in December 2019, failed to reach the
ISS due to software glitches. The capsule succeeded on its second ISS
try in May 2022 but experienced a few issues with its propulsion system
during that flight.
CFT has had hiccups as well rCo namely, helium leaks and the thruster
issues. (Five of Starliner's 28 RCS thrusters failed as it chased the
ISS down shortly after launch.) The mission was supposed to last just 10
days or so, but NASA kept Starliner at the ISS for three months as it
analyzed the thruster problems and what to do about them.
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Those issues appear to be linked to overheating rCo a result, perhaps,
both of the frequency of thruster use and their placement inside heat-retaining shelters on the outside of the spacecraft known as
"doghouses." Bulging seals and insulation shedding appear to restrict
the flow of propellant to the RCS thrusters.
NASA and Boeing had hoped that CFT would pave the way for Starliner's
first operational crewed flight. That mission, known as Starliner-1, is tentatively targeted for August 2025. But it's too soon to tell if
Starliner will hit that timeline.
"I think we'll see where we're at in another month or so, and have a
little bit better idea of what the overall schedule will be," Steve
Stich, manager of NASA's Commercial Crew Program, said during a
post-landing press conference on Saturday morning.
That schedule could even include another test flight before Starliner is certified for operational astronaut missions.
"I would say it's probably too early to think about exactly what the
next flight looks like. I think we want to take the next step to go look
at all the data," Stich said.
"We've got some things we know we've got to go work on," he added. "And
we'll go do that and fix those things, and then go fly when we're ready."
A white and black Boeing Starliner space capsule is seen docked at the International Space Station through a station window with the Earth below.
Boeing Starliner docked at the International Space Station during Crew
Flight Test in 2024. (Image credit: NASA)
Much of this work will focus on the RCS thruster overheating issue and
how to mitigate it.
"What we need to do now is go take a thruster at White Sands [Test
Facility in New Mexico] and make sure we understand the exact pulse
sequences that cause the heating," Stich said. "And then, at the same
time, in parallel, look at software changes to reduce the number of
demands on the thrusters."
Teams will also investigate removing or altering the thermal blankets
inside the doghouses, to help keep the thrusters cooler, he added.
"So it's really three different thrusts, I would say," Stich said.
RELATED STORIES:
rCo 'There was some tension in the room', NASA says of decision to bring Boeing's Starliner spacecraft home without astronauts
rCo SpaceX's Crew-9 astronaut launch delayed to Sept. 24 due to Boeing Starliner issues
rCo How 2 fatal shuttle disasters weighed on NASA's decision to bring
Boeing Starliner astronauts home on SpaceX Dragon
But there were plenty of positives to take from CFT, Stich stressed.
Starliner performed very well during its entry, descent and landing
today, he said, describing the touchdown in White Sands Space Harbor as
a "bullseye." And he estimated that, despite Starliner's issues, Boeing
was able to notch 85% to 90% of CFT's mission objectives.
Joel Montalbano, deputy associate administrator for NASA's Space
Operations Mission Directorate, also emphasized the positives, and
sought to put CFT into the proper perspective.
"It's important to remember: This was a test mission, right?" Montalbano
said during the post-landing press conference. "We learned from this
mission."
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Elizabeth Howell
Elizabeth Howell
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